Don't forget another possible explanation: Objective C, C and C++ are difficult languages, meaning there's a barrier to entry. Apple may also want to prevent ap

Don't forget another possible explanation: Objective C, C and C++ are difficult languages, meaning there's a barrier to entry. Apple may also want to prevent application development from becoming a commodity: they don't want "widget shops" employing warm bodies to churn out low-value applications. Of course, I disagree with this approach: there already are widget shops. It's possible to program in a language without knowing it, by writing it non-idiomatically resulting in buggier, slower code that takes longer to develop and is difficult to maintain. The fact that they write in languages that take longer to develop an app in would just mean they'll choose "low quality" while still maintaining the same quantity.